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44 Cards in this Set
- Front
- Back
satellites that match the earht's rotation so they can hang in a stationary position relavtive to the spinning planet below, relaying wireless transmissions between locations
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geostationary communications satellites
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technology of long-distance communications
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telecommunications
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Multiple personal computers connected on a network.
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local area network (LAN)
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connected by cables, which serve as pathways for transporting data between machines
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node
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most common type of LAN; contains copper wires that resemble those in standard telephone cables.
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twisted pair
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satellites that match the earht's rotation so they can hang in a stationary position relavtive to the spinning planet below, relaying wireless transmissions between locations
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geostationary communications satellites
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technology of long-distance communications
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telecommunications
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Multiple personal computers connected on a network.
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local area network (LAN)
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connected by cables, which serve as pathways for transporting data between machines
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node
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most common type of LAN; contains copper wires that resemble those in standard telephone cables.
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twisted pair
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A network in which a node has a tiny radio or infrared transmitter connected to its network port so it can send and receive data through the air rather than through cables.
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wireless network
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take care of the behind-the-scenes details so others can focus on using the network.
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network administrators
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large,complex networks with hundreds of computers
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enterprise network systems
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track and maintain healthy networks
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network management system software
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service that links two or more LAN's within a city
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Metropolitan area network (MAN)
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network that extends over a long distance
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wide area network (WAN)
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data is transmitted long-distance betwen networks on a collection of common pathways known as-
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backbone
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Hardware devices that can pass messages between networks.
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bridge
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Computers connected to two networks that translate communication protocols and transfer information between the two.
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gateway
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Programs or devices that decide how to route Internet transmissions.
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routers
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A Defense Department system with 24 satellites that can pinpoint any location on the Earth.
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Global Positioning System (GPS)
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use signals to broadcast by three or four visible satellites to determine its position
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GPS receiver
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specializede terminal linked to a bnaks's main computer through a commerical banking network
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Automated Teller Machine (ATM)
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dedicated, direct connection to the Internet through a LAN, with the computer having its own IP address.
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direct connection
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Network access via phone line, TV cable system, or wireless link.
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remote access
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Socket that allows information to pass in and out.
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port
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enable bits to pass through in groups of 8,16, or 32
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parallel ports
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require bits to pass through one at a time
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serial ports
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ports that are much faster and more flexible than traditional serial and parallel ports
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USB and FIREWIRE(IEEE 1394)
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Card that adds an additional serial port to a computer. The port is especially designed for a direct network connection.
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network interface card (NIC)
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A popular networking architecture developed in 1976 at Xerox
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ethernet
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A stream of bits.
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digital signal
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A continuous wave.
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analog signal
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Modulator/demodulator. A hardware device that connects a computer to a telephone line.
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modem
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installed on a circuit boarde insdie the computer's chassis
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internal modem
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sits in a box linked to a serial port or USB port
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external modem
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The standard unit of measure for modem speed.
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bits per second
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The quantity of information that can be transmitted through a communication medium in a given amount of time.
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bandwidth
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connection with much greater bandwidth than modems have
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broadband connection
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High-capacity cable that uses light waves to carry information at blinding speeds.
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fiber-optic cables
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fastest growing wireless LAN technology
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Wi-Fi or 802.11b
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A type of wireless technology that enables mobile phones, handheld computers, and PCs to communicate with each other regardless of operating system.
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bluetooth
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network that links a variety of perswonal electionic devices so they can communicate with each other
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personal area network (PAN)
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promises high-bandwidth connections that will support true multimedia
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3G
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